package api;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet("/logout")
public class LogoutServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //接收请求后返回302+重定向到登录界面
        HttpSession session = req.getSession(false);
        if(!(session == null) && !(session.getAttribute("user") == null)){
            session.removeAttribute("user");
        }
        resp.setStatus(302);
        resp.sendRedirect("login.html");
    }
}
